feat(ministry): add Ministry entity, seed (10), and read endpoint

API/ROLAC.API/Services/IMinistryService.cs

@@ -0,0 +1,7 @@
+using ROLAC.API.DTOs.Ministry;
+namespace ROLAC.API.Services;
+
+public interface IMinistryService
+{
+    Task<List<MinistryDto>> GetAllAsync(bool includeInactive);
+}

API/ROLAC.API/Services/MinistryService.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore;
+using ROLAC.API.Data;
+using ROLAC.API.DTOs.Ministry;
+
+namespace ROLAC.API.Services;
+
+public class MinistryService : IMinistryService
+{
+    private readonly AppDbContext _db;
+    public MinistryService(AppDbContext db) => _db = db;
+
+    public async Task<List<MinistryDto>> GetAllAsync(bool includeInactive)
+    {
+        var query = _db.Ministries.AsNoTracking().AsQueryable();
+        if (!includeInactive) query = query.Where(m => m.IsActive);
+        return await query
+            .OrderBy(m => m.SortOrder).ThenBy(m => m.Name_en)
+            .Select(m => new MinistryDto
+            {
+                Id = m.Id, Name_en = m.Name_en, Name_zh = m.Name_zh,
+                SortOrder = m.SortOrder, IsActive = m.IsActive,
+            })
+            .ToListAsync();
+    }
+}